CN107876353A - GIS enamel chemical industry skills - Google Patents
GIS enamel chemical industry skills Download PDFInfo
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- CN107876353A CN107876353A CN201711264984.4A CN201711264984A CN107876353A CN 107876353 A CN107876353 A CN 107876353A CN 201711264984 A CN201711264984 A CN 201711264984A CN 107876353 A CN107876353 A CN 107876353A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/58—No clear coat specified
- B05D7/584—No clear coat specified at least some layers being let to dry, at least partially, before applying the next layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2202/00—Metallic substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/60—Adding a layer before coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2451/00—Type of carrier, type of coating (Multilayers)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2505/00—Polyamides
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention belongs to GIS field of switches, more particularly to GIS enamel chemical industry skills, roughening treatment, Coating Pretreatment, application processing and the application post processing carried out successively including GIS housing parts, roughening treatment, GIS housing parts make its surface roughness Ra value reach 11~13 after sandblasting or Shot Blasting;Coating Pretreatment, the GIS housing parts by roughening treatment carry out degreasing, light extraction, passivation, rinse, blow water and drying successively;Application is handled, and the GIS housing parts by Coating Pretreatment apply priming paint, putty, intermediate coat and enamel paint successively;Application is post-processed, and the GIS housing parts handled by application are processed by shot blasting.GIS surface of shell gloss prepared by GIS enamel chemical industry skill of the present invention is bright-coloured, plentiful, attractive in appearance, no particle, free from admixture, while lifting GIS model machine quality, reduces production cost.
Description
Technical field
The invention belongs to GIS field of switches, is related to GIS enamel chemical industry skills.
Background technology
SF6Gas insulated metal enclosed swit chgear (the closed High-Voltage Electrical Appliances stacked switch of sulfur hexafluoride all-metal, following abbreviation
" GIS "), done and insulated and arc-extinguishing medium using the remarkable sulfur hexafluoride gas of insulating properties, transformer will be removed in a transformer station
Primary equipment in addition, including breaker, disconnecting switch, earthed switch, voltage transformer, current transformer, arrester, mother
Line, cable termination, inlet-outlet sleeve etc., optimized design are organically combined into an entirety, can significantly reduce transformer station
Volume, realize miniaturization.
The outward appearance of the existing GIS model machines in China still has certain gap compared to the state such as American-European-Japanese, is mainly shown as appearance color
It is not bright-coloured, paint finishes are poor, paint film is not plentiful, paint particle and impurity are more.The existing enamel lacquer type organic coating solid point used contains
Amount 60%, 50 °~60 ° of gloss, the dry film gross thickness formed after spraying are 70~120 μm, cause enamel gloss difference, paint film not
The defects of plentiful.
As GIS market competitions are increasingly fierce, to the requirement more and more higher of GIS model machine outward appearances, GIS manufacturers are to GIS
Outward appearance increasingly pay attention to, therefore, how to improve GIS outer surfaces enamelling process, make GIS model machine appearance colors more bright-coloured, paint film
Coating is fuller, and outward appearance is more exquisite, is still this area technical problem urgently to be resolved hurrily.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides GIS enamel chemical industry skills.
The technical scheme is that:GIS enamel chemical industry skills, step include:GIS housing parts are carried out at roughening successively
Reason, Coating Pretreatment, application processing and application post processing,
Roughening treatment, GIS housing parts after sandblasting or Shot Blasting, make its surface roughness Ra value reach 11~
13;Ra values are preferably 12.5;
Coating Pretreatment, the GIS housing parts by roughening treatment carry out degreasing, light extraction, passivation, rinse, blow water successively
And drying;
Application is handled, and the GIS housing parts by Coating Pretreatment apply priming paint, putty, intermediate coat and enamel successively
Paint;
Application is post-processed, and the GIS housing parts handled by application are processed by shot blasting.
During Coating Pretreatment:
The degreasing be 50 DEG C~60 DEG C under the conditions of with 1 point~3 points of free alkalinity, pH value 8~10 alkali liquid washing 3~
5min, preferably 3min.Alkali lye used in degreasing is the basic salt such as sodium hydroxide or sodium carbonate, sodium phosphate, sodium metasilicate, Boratex
In one or any mixed base, in the alkali lye also containing metal-chelators such as EDTA, sodium citrate, triethanolamines and
The organic additives such as ethylene glycol, ethylene glycol monoethyl ether, alkali lye is helped to improve cleaning performance;A small amount of table can be also added in the alkali lye
Face activating agent, play a part of helping emulsify, soak, disperse grease.Degreasing alkali cleaning mode generally impregnates cleaning or injection
Cleaning, the dipping cleaning preferably under circulation stirring state.
The light extraction be wash 3 with 1 point~2 points of free acidity, 2 points~4 points of total acidity, the acid solution of pH value 2~3~
5min, preferably 3min.Acid solution used in light extraction is the one or any combination in inorganic acid, organic acid or ackd salt,
For example, the one or any mixed acid in sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, chromic acid, hydrofluoric acid, citric acid, potassium bichromate
Deng.Light extraction pickling mode typically has the methods of brushing, hydro-peening, dipping and roller, and the preferably dipping under circulation stirring state is washed
Wash.
The passivation is 3 points~6 points of the total acidity with 2 points~3 points of free acidity, the acid solution washing 3 of pH value 3~4~
5min, preferably 3min.Acid solution used in passivation is the one or any combination in inorganic acid, organic acid or ackd salt,
For example, in sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, chromic acid, molybdic acid, hydrofluoric acid, citric acid, molybdate, potassium bichromate, potassium permanganate
One or any mixed acid etc..Passivation pickling mode typically has the methods of brushing, hydro-peening, dipping and roller, preferably follows
Dipping washing under ring stirring.
The rinsing is pure water spray rinsing, the preferably instant spray rinsing of fresh alcohol water;The μ s/ of pure water conductivity≤20
Cm, preferably 1~10 μ s/cm, more preferably 1~5 μ s/cm.
It is described to blow water to remove screwed hole, blind hole and the ponding of other easy water accumulation parts, removed using artificial means.
The drying dries 10~20min under the conditions of being 65 DEG C~100 DEG C.Drying temperature is preferably 75 DEG C~85 DEG C, is dried
The dry time is preferably 15min.
In application processing procedure:
The method for applying priming paint includes, in the GIS housing part surface spraying epoxy primers Jing Guo Coating Pretreatment
It it is 50~80 μm to its dry film gross thickness;Spray epoxy primer more than 1 time, preferably 2 times;Epoxy primer is preferably epoxy polyamides
Amine priming paint.
The epoxy polyamide priming paint is made up of epoxy resin and polyamide, and polyamide is curing agent, epoxy
Amine addition reaction occurs for the amido in the epoxy bond and polyamide in resin, exists with the metal ion of clean metal surface
Interface forms a kind of firm, continuous film.Epoxy primer coating and the adhesion at metal surface interface are very firm.
The method for applying putty includes, and is scraped applying at the pit on the GIS housing parts surface of priming paint or out-of-flatness
Apply epoxy putty, to pit or out-of-flatness at flushed with GIS housing parts surface.
Preferably, consolidate in the epoxy putty for applying blade coating at the pit on the GIS housing parts surface of priming paint or out-of-flatness
After change, first essence polishing after thick polishing, to pit or out-of-flatness at flushed with GIS housing parts surface.Using 180~320 mesh
Coarse sandpaper is slightly polished, preferably 320 mesh.Polished using 600~1000 mesh fine sandpapers essence, preferably 800 mesh.It is recessed after essence polishing
Flushed at hole or out-of-flatness with GIS housing parts surface.After essence polishing, dip in absolute ethyl alcohol with hairless paper and wipe polishing dust.
The method for applying intermediate coat includes, and is applying the GIS housing part surface spraying epoxies intermediate coat of putty extremely
Its dry film gross thickness is 100~160 μm;Spray epoxy intermediate coat more than 1 time, preferably 2 times.
Preferably, after the solidification of the epoxy intermediate coat of GIS housing part surface sprayings of putty is applied, first slightly beaten
Mill, carries out smart polishing afterwards, finally wipes polishing dust.Slightly polished using 180~320 mesh coarse sandpapers, preferably 320 mesh.Using
The essence polishing of 600~1000 mesh fine sandpapers, preferably 800 mesh.Absolute ethyl alcohol, which is dipped in, with hairless paper wipes polishing dust.
The method for applying enamel paint includes, and is applying the GIS housing part surface spraying solids contents of intermediate coat
>=70%, the lacquer type organic coating of gloss >=90 °, it is 150~210 μm to its dry film gross thickness.
Preferably, the grinding process carried out after the solidification of the lacquer type organic coating of GIS housing part surface sprayings of intermediate coat is applied,
Polishing sand paper is 1200~2000 mesh sand paper, preferably 1500 mesh.
In application last handling process:
Antiscuffing paste is applied on the GIS housing parts surface by application processing, is processed by shot blasting with wool polishing machine.
It is as follows relative to prior art, beneficial effects of the present invention:
GIS enamel chemical industry skill of the present invention is simple, feasible, easy to operate, systematization, simplification, uses GIS enamel of the present invention
GIS surface of shell coating gloss prepared by technique is bright-coloured, plentiful, attractive in appearance, by improving lacquer painting coating performance and quality, so as to change
While kind GIS mass, production cost is reduced.
Embodiment
The invention will be further elucidated with reference to specific embodiments.It should be understood that these embodiments are merely to illustrate this hair
Bright rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, art technology
Personnel can make various changes or modifications to the present invention, and these equivalent form of values equally fall within scope defined herein.
GIS enamel chemical industry skill of the present invention includes roughening treatment, Coating Pretreatment, the application processing on GIS housing parts surface
Post-processed with application, Coating Pretreatment includes degreasing, light extraction, passivation, rinses, blows the steps such as water and drying, and application processing includes
Apply the steps such as priming paint, putty, intermediate coat and enamel paint." GIS parts " refers to the part for forming GIS housings or portion herein
Part, it is aluminum alloy material.Need the enamelization operation of the GIS piece surfaces of enamel as follows:
(1) roughening treatment:The surface of GIS parts to needing enamel carries out sandblasting or Shot Blasting, at sandblasting or ball blast
The surface roughness Ra value of the GIS parts for needing enamel after reason reaches 12.5 or so.
After roughening treatment, a kind of structure of micro-rough is obtained in GIS piece surfaces, is allowed to be changed into hydrophilic from hydrophobicity
Property, increase the contact area of surface and coating, to improve adhesion between coating and piece surface, roughened piece surface can be bright
The aobvious real table area for improving metal surface, further improve adhesion property of the coating in piece surface.
(2) Coating Pretreatment, by roughening treatment need enamel GIS parts carry out successively degreasing, light extraction, passivation,
Rinse, blow the Coating Pretreatment step such as water and drying.
Degreasing be 50 DEG C~60 DEG C under the conditions of circulation stirring alkalescence degreaser wash 3min, alkaline degreaser be sodium carbonate,
1 point~3 points of free alkalinity that sodium pyrophosphate, waterglass, sodium hydroxide and surfactant etc. are mixed to prepare, pH value 8~10
Alkaline solution, with thoroughly remove the greasy dirt of GIS piece surfaces, dust and with it is dirty.
Light extraction be normal temperature state under circulation stirring acidity light-emitting solution wash 3min, acid light-emitting solution be watery hydrochloric acid, citric acid,
2 points~4 points of 1 point~2 points of free acidity, total acidity that chromic acid and hydrofluoric acid etc. are mixed to prepare, the acid solution of pH value 2~3, with
The material of the oxide layer ash content similar with GIS piece surfaces of GIS piece surfaces is thoroughly removed, degreasing alkali lye residual is neutralized, makes it
Expose the metallic matrix true qualities of light.
It is passivated and washs 3min for circulation stirring acid passivation liquid under normal temperature state, acid passivation liquid is free acidity 2 points~3
Point, 3 points~6 points of total acidity, the molybdate solution of pH value 3~4;Passivation makes GIS piece surfaces form passivation layer, avoids GIS zero
Part in atmosphere by autoxidation while, and do not influence the contact resistance of part.
Rinse as with the instant spray rinsing of fresh pure water just produced, the μ s/cm of pure water conductivity≤5;Rinse with pure
The electrical conductivity of water is smaller, and its cleanliness factor is higher, and the GIS piece surfaces with its rinsing are cleaner.And the GIS zero rinsed through pure water
Part, water stain-free vestige after drying.
The mode that hydromining manually blows water is blown, the main product for removing GIS parts screwed hole, blind hole and other easy water accumulation parts
Water, workpiece flash baking can be made in the short period of time, under relatively low temperature conditionss, save the energy and time.
Dry to dry 15min under the conditions of 75 DEG C~85 DEG C, for removing moisture removal;Because of artificial removal's ponding, in middle low temperature
Under the conditions of can complete field drying operation, avoid GIS part high-temperature oxydations.
(3) application handle, by Coating Pretreatment need enamel GIS piece surfaces apply successively priming paint, putty, in
Between paint and the application processing step such as enamel paint,
The method for applying priming paint is to spray 2 times epoxy primers, after epoxy primer dry solidification, the thickness of epoxy primer
For 50~80 μm.Epoxy primer is epoxy polyamide priming paint, is made up of epoxy resin and polyamide, and polyamide is solid
Amine addition reaction, the metal with clean metal surface occur for agent, the epoxy bond of epoxy resin and the amido of polyamide
Ion forms a kind of firm, continuous film at interface.Therefore, the adhesion at epoxy primer coating and metal surface interface is very
Firmly.
2 epoxy primers are sprayed, both ensures to need the GIS piece surfaces 100% of enamel to be covered by epoxy primer, also ensures that
The thickness and the uniformity of epoxy primer.
Epoxy primer is also known as two component epoxy coating, the solvent type epoxy priming paint being made up of host and curing agent packing, main
Agent is made up of middle low-molecular-weight epoxy resin, solvent, pigment and auxiliary agent etc., and curing agent is amine curing agent.Epoxy primer increase
Adhesive force between ground and coating, species have epoxy zinc rich primer, epoxy zinc chromate primer etc..
The method for applying putty is that the GIS piece surfaces after spray-applied primer manually scratch epoxy putty, for filling
The pit of GIS piece surfaces or the place for not reaching level requirements, and the packed height of epoxy putty is recessed higher than GIS parts
Surface is cheated, after epoxy putty drying, is first slightly polished with 320# coarse sandpapers, then is polished with 800# fine sandpapers essence, makes epoxy putty
Height is concordant with the GIS piece surfaces after spray-applied primer, and finally dipping in absolute ethyl alcohol with hairless paper will polish the wiped clean such as dust,
Avoid influence of the dust to follow-up paint film application of polishing.
In order to reduce influence of the out-of-flatness of paint film coating in coating process to product appearance, and it is reduced to eliminate paint film
Out-of-flatness and be repeated polishing, apply process, simplify apply process while, both optimized the function of paint film coating, again protect
Demonstrate,prove product appearance, the putty method of application, only the pit of GIS piece surfaces after spray-applied primer or do not reach level requirements
Place blade coating epoxy putty.
In addition, the blade coating epoxy putty of the GIS piece surfaces after spray-applied primer also may be selected, then beating repeatedly is being carried out
Mill and blade coating process, until surfacing.
Epoxy putty is made up of host and curing agent packing, and host is made up of epoxy resin, solvent, pigment and auxiliary agent etc.,
Curing agent is made up of polyamide, phenolic resin etc. and solvent etc..The defects of for filling up surface of bottom material (pit, injustice
It is whole), make surface of bottom material flat smooth.
The method for applying intermediate coat is, in the GIS piece surfaces after spray-applied primer and blade coating putty spray 2 times epoxies
Between paint, after epoxy intermediate coat drying after, first slightly polished with 320# coarse sandpapers, surface particles, impurity etc. polished off;800# is used again
Fine sandpaper integrally polishes epoxy intermediate coat one time, and finally dipping in absolute ethyl alcohol with hairless paper will polish the wiped clean such as dust, keep away
Exempt from influence of the dust to follow-up paint film application of polishing, the dry film gross thickness of epoxy intermediate coat is 100~160 μm.
By spraying intermediate coat, the small defect for not reaching level requirements carried over after blade coating putty is covered, and it is convex
The big defects such as the pit carried over after aobvious blade coating putty, after ensureing the spraying of enamel paint, the excellent enamel of GIS piece surfaces
Effect.
Epoxy intermediate coat is made up of host and curing agent packing, and host is by epoxy resin, micaceous iron oxide or flakey cloud
The rust resisting pigments such as female iron oxide, solvent and auxiliary agent etc. form.Curing agent is by groups such as polyamide, phenolic resin etc. and solvents
Into.Epoxy intermediate coat further increases film thickness, while enhancing lacquer painting adhesive force improves painting effect, strengthens paint film layer
Antiseptic effect, and cost is low.The species of epoxy intermediate coat has epoxy micaceous iron paint, epoxy zinc-rich cloud iron paint etc..
The method for applying enamel paint is, GIS piece surfaces after intermediate coat spray spray solid content >=70%,
The lacquer type organic coating of gloss >=90 °, after lacquer type organic coating drying, polished with 1500# sand paper, lacquer type organic coating surface particles, impurity and sagging etc.
Open defect sanding and polishing is got rid of, and the dry film gross thickness of lacquer type organic coating is 150~210 μm.
Using gloss >=90 ° of the resin paint film of enamel paint method of application of the present invention spraying, brighter bright-coloured, plumpness
It is more plentiful, enamel excellent effect.
(4) application post-processes, and the GIS surface of shell handled by application coats antiscuffing paste, at wool polishing machine polishing
Reason, make its surface that high glaze be presented.
The surface roughness of roughening treatment increase Metal Substrate bottom surface, the actual surface area in expanded substrate face, enhancing paint film with
The adhesion of Metal Substrate bottom surface;The interference impurity such as greasy dirt, grey matter on Coating Pretreatment removing Metal Substrate bottom surface, ensure metal
Cleanliness factor before basal surface application;Roughening treatment is bad, paint film and metallic substrates emaciated face from;Cleannes are inadequate, equally can also make
Into paint film and metallic substrates emaciated face from or lacquer painting such as heaves at the bad phenomenon caused by the corrosion of Metal Substrate bottom surface.Therefore, apply
Fill the roughening treatment of before processing and the effect of Coating Pretreatment directly influences the shaping of paint film and quality after application.
Claims (7)
1.GIS enamel chemical industry skills, it is characterised in that step includes:Before GIS housing parts are carried out into roughening treatment, application successively
Processing, application processing and application post processing,
The roughening treatment is that GIS housing parts make its surface roughness Ra value reach 11 after sandblasting or Shot Blasting
~13;
The step of Coating Pretreatment, includes, the GIS housing parts by roughening treatment carry out successively degreasing, light extraction, passivation,
Rinse, blow water and drying;
The application processing is that the GIS housing parts by Coating Pretreatment apply priming paint, putty, intermediate coat and enamel successively
Change paint;
The application post processing is that the GIS housing parts handled by application are processed by shot blasting.
2. GIS enamel chemical industry skill according to claim 1, it is characterised in that during Coating Pretreatment,
The degreasing is:With 1 point~3 points of free alkalinity, 3~5min of alkali liquid washing of pH value 8~10 under the conditions of 50 DEG C~60 DEG C;
The light extraction is:3~5min is washed with 1 point~2 points of free acidity, 2 points~4 points of total acidity, the acid solution of pH value 2~3;
The passivation is:3~5min is washed with 2 points~3 points of free acidity, 3 points~6 points of total acidity, the acid solution of pH value 3~4;
The rinsing is the pure water spray rinsing with the μ s/cm of conductance≤20;
The drying condition is that 10~30min is dried at 65 DEG C~100 DEG C.
3. GIS enamel chemical industry skill according to claim 1, it is characterised in that in application processing procedure:
It is described apply priming paint method include, the GIS housing part surface spraying epoxy primers Jing Guo Coating Pretreatment to its
Dry film gross thickness is 50~80 μm;
The method for applying putty includes, and ring is scratched at the pit on the GIS housing parts surface of priming paint or out-of-flatness applying
Oxygen putty, to pit or out-of-flatness at flushed with GIS housing parts surface;
The method for applying intermediate coat includes, dry to it in the GIS housing parts surface spraying epoxy intermediate coat for applying putty
Film gross thickness is 100~160 μm;
It is described apply enamel paint method include, apply intermediate coat GIS housing part surface sprayings solids content >=
70%th, the lacquer type organic coating of gloss >=90 °, it is 150~210 μm to its dry film gross thickness.
4. GIS enamel chemical industry skill according to claim 1, it is characterised in that in described application last handling process, passing through
The GIS housing parts surface for crossing application processing applies antiscuffing paste, with wool polishing machine polishing.
5. the GIS enamel chemical industry skills according to claim 1 or 3, it is characterised in that the method for applying putty is to apply bottom
After paint, after the epoxy putty solidification scratched at the pit on GIS housing parts surface or out-of-flatness, first essence is beaten after thick polishing
Mill, to pit or out-of-flatness at flushed with GIS housing parts surface.
6. GIS enamel chemical industry skill according to claim 3, it is characterised in that when applying intermediate coat, GIS housing part tables
After the epoxy intermediate coat solidification of face spraying, first slightly polished, carry out smart polishing afterwards.
7. GIS enamel chemical industry skill according to claim 3, it is characterised in that when applying enamel paint, GIS housing parts
Grinding process is carried out after the lacquer type organic coating solidification of surface spraying.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109807047A (en) * | 2018-12-29 | 2019-05-28 | 安徽鑫铂铝业股份有限公司 | A kind of high-performance heronsbill heat radiator aluminium profile |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN109807047A (en) * | 2018-12-29 | 2019-05-28 | 安徽鑫铂铝业股份有限公司 | A kind of high-performance heronsbill heat radiator aluminium profile |
CN110170437A (en) * | 2018-12-29 | 2019-08-27 | 山东达驰高压开关有限公司 | A kind of spary process of resistance to electric arc high resistant red enamel |
CN110170437B (en) * | 2018-12-29 | 2022-05-17 | 山东达驰高压开关有限公司 | Spraying process method of arc-resistant high-resistance red enamel paint |
CN111155079A (en) * | 2019-12-13 | 2020-05-15 | 中国电子科技集团公司第十四研究所 | Tempering agent for enhancing adhesion of organic material coated on surface of hot-dip galvanized steel and tempering method thereof |
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